(19)
(11) EP 0 494 984 A1

(12)

(43) Date of publication:
22.07.1992 Bulletin 1992/30

(21) Application number: 90915933.0

(22) Date of filing: 01.10.1990
(51) International Patent Classification (IPC): 
G01R 25/ 00( . )
H03L 7/ 091( . )
 H03L 7/ 085( . )
H04L 7/ 033( . )
(86) International application number:
PCT/US1990/005579
(87) International publication number:
WO 1991/005422 (18.04.1991 Gazette 1991/09)
(84) Designated Contracting States:
DE FR GB

(30) Priority: 03.10.1989 US 19890416357
07.05.1990 US 19900519579

(71) Applicant: ANALOG DEVICES, INCORPORATED
Norwood, MA 02062-9106 (US)

(72) Inventor:
  • DEVITO, Lawrence, M.
    Tewksbury, MA 01876 (US)

(74) Representative: Warren, Anthony Robert 
BARON & WARREN 18 South End Kensington
London W8 5BU
London W8 5BU (GB)

   


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